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Finding the Fourth Proportional to 279,475.71, 384,822.27 and 210,665.13

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Solution

The fourth proportional to 279,475.71, 384,822.27 and 210,665.13 is: 290,073.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,475.71 : 384,822.27 = 210,665.13 : x
  2. Step 2: Convert to fraction form
    279,475.71/384,822.27 = 210,665.13/x
  3. Step 3: Cross multiply
    279,475.71x = 384,822.27 × 210,665.13
  4. Step 4: Simplify right side
    279,475.71x = 81,068,633,536.45
  5. Step 5: Solve for x
    x = 81,068,633,536.45/279,475.71
  6. Step 6: Final answer
    x = 290,073.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.